ref: a00b6bdbfa72a1688a866edf5f825720c9874ada
dir: /sys/src/cmd/rc/trap.c/
#include "rc.h" #include "exec.h" #include "fns.h" #include "io.h" extern char *Signame[]; void dotrap(void) { int i; struct var *trapreq; struct word *starval; starval = vlook("*")->val; while(ntrap) for(i = 0;i!=NSIG;i++) while(trap[i]){ --trap[i]; --ntrap; if(getpid()!=mypid) Exit(getstatus()); trapreq = vlook(Signame[i]); if(trapreq->fn){ start(trapreq->fn, trapreq->pc, (struct var *)0); runq->local = newvar("*", runq->local); runq->local->val = copywords(starval, (struct word *)0); runq->local->changed = 1; runq->redir = runq->startredir = 0; } else if(i==SIGINT || i==SIGQUIT){ /* * run the stack down until we uncover the * command reading loop. Xreturn will exit * if there is none (i.e. if this is not * an interactive rc.) */ while(!runq->iflag) Xreturn(); } else Exit(getstatus()); } }